I need help with this problem for homework
for graphing and linear equations
y=2x-4.2
Can you please give me one of them so I cansolve for the other one?PLease!
The general formula for a straight line is y = mx + b.
Just plug the points into the equation to arrive at two equations.
6=2m+b
10=4m+b
you have two equations and two unknowns. Solve them simultaneously to obtain an answer for b
Multiply the first equation by -2. Leave the other one as is.
-12=-4m-2b
10=4m+b
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Now add the two equations
-2 = 0m -b or
-2 = -b
and b = 2
Check my arithmetic. Now plug b into one of the equations to solve for m, then plug those two values into your original equation to see if it is satisfied. If so, then 2 is the answer you need.
It would be helpful, and get you quicker answers, if you put the SUBJECT (in this case math) in the SUBJECT line.
Thanks.
=)
What would be the missing piece of information given the following information:
Find the equation of the line that passes through the points (2, 6) and (4, 10).
y = 2x + ?
4
2
7
5
The general formula for a straight line is y = mx + b.
Just plug the points into the equation to arrive at two equations.
6=2m+b
10=4m+b
you have two equations and two unknowns. Solve them simultaneously to obtain an answer for b
1 answer