7. The table shows the costs of a large cheese pizza with toppings at a local pizzeria. Graph the data, and find the slope and
y-intercept from the graph. Then write the equation for the
graph in slope-intercept form.
Number of toppings, t
0
1
2
3
4
5
8
Total cost, C
10
12
14
18
16

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.