Question

PLS HURRY I'LL MARK BRAINLEST
7. The graph to the right represents the distance (y) Kirk has walked after x seconds.
a. What is the slope-intercept equation for the graph?
b. Predict how far Kirk will have walked after 72 seconds.
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Answer 1

Answer:

a). y = 1.6x

b). Distance traveled = 115.2 feet

Step-by-step explanation:

From the graph attached,

A). Distance traveled by Kirk ∝ Duration of walk

    D ∝ t

    D = kt

    Or y = kx

    Since a point (5, 8) lies on the line given in the graph,

    8 = 5k

    k = $\frac{8}{5}$ = 1.6

    Therefore, equation will be,

    y = 1.6x

B). We have to find the distance walked after 72 seconds.

    By putting x = 72 seconds

    y = 1.6 × 72

       = 115.2 feet

    Distance traveled by Kirk = 115.2 feet