A.
Flat doesn't change
2 changes with x
y = 2 x + 5
B.
y-intercept is a point on the graph where x is zero.
y = 2 * 0 + 5 = 0 + 5 = 5
x = 0 , y = 5
x-intercept is a point on the graph where y is zero.
2 x + 5 = 0
2 x = - 5
x = - 5 / 2 = - 2 .5
x = - 2.5 , y = 0
Draw Cartesian coordinate system.
Mark point x = - 2.5 , y = 0 and point x = 0 , y = 5 and draw sraigth line.
Label point x = 0 , y = 5 like y-intercept
C.
In point x = 2 draw a vertical line.
Find point where this vertical line toucing graph.
y coordinate of this point is the cost for 2 hours.
The cost = $9
Ed’s rental charges a flat fee of $5 plus $2 per hour to rent a pair of skates.
A. Write an equation to model the cost of renting skates, y, for x hours.
B. Graph the equation. Label the y-intercept.
C. Use the graph to find the cost for renting the skates for 2 hours. Show the details on your graph above.
What is the cost?
1 answer
4 answers