1 The point (5, -3) is a solution to which system of equations?
y=x-8
2x+y=7
2 How many solutions does the system of equations have?
y=−2x+12
4y+x−20=0
one solution***
3
first box -1.5, 4.5
second box no solution
third box 1,1
fourth box (-1,2)
it may be randomize so these may not be correct use at your own risk
4 A company owns two dealerships, both of which sell cars and trucks. Dealership A sells a total of 225 cars and trucks. Dealership B sells twice as many cars and half as many trucks as the Dealership A, and sells a total of 300 cars and trucks.
a)x+y=225
b)2x+1/2y=300
c)125
d)50
5 The sum of two numbers is 22. Three times one number increased by five is 35.
a)x+y=22 and 3x+5=35
b)10 and 12
6 Joelle currently has 18 rocks in her collection and gains 4 each week. Lewis currently has 30 rocks in his collection and gains 3 each week. Set up a system of equations to show how many rocks each has in their collection.
a) 4x+18
b)3x+30
c)12
d)66
7) Which graph represents the solution for the equation −52x−1=4x+2
?
its the one that looks like a X
8)Solve the system of equations using your Desmos calculator:
3x+2y=2
−2x+y=8
(-2,4)***
9 Not including tax, a total of 19 pens and markers cost $11.50. The pens cost $0.25 each, and the markers cost $0.75 each. Write the system of equations that could be used to solve for the number of pens, p, and the number of markers, m, bought.
p+m=19
0.25p+0.75m=11.50
10 Joyce wants to go to the zoo with her friend over spring break. You can pay $45 to get into the zoo each time, or join a membership for $50 and then only pay $20 each visit to the zoo. How many times will Joyce need to visit the zoo to justify the expense of the membership fee?
3***
11 Two systems of equations are shown:
4x+y=−1
x+y=2
and
8x+2y=−2
−4x+cy=−8
What would the value of c need to be to get the same solution for both systems?
-4***
12 Susie determined that the system of equations below has infinitely many solutions.
The first line goes through the points (2, -13) and (-2, -1).
The second line goes through the points (5, -22) and (-3, 2).
Is she correct? *Use your Desmos calculator
yes, Susie is correct***
13 The graph shows how the values of two used cars changed during a 10 year period.
after 8*** years the cars both have a value of$ 9000***
14 Put the steps in order that are used to solve the following systems of equations by substitution.
−7x−2y=−13
x−2y=11
1. x-2y=11-->x=2y+11
2. -7(2y+11)-2y=-13
3. -14y-77-2y=-13
4. -16y-77=-13
5. 16y=64
6. y=-4
7. x-2(-4)=11
8. x+8=11
9. x=3
10. (3,-4)
these are all the correct answers as i said in the other post i need likes and thanks and ill do more or if you have discord you can join and ill be more responsive there and will give more answers.
the name is
da monks conex 8878
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