What equation is shown by the graph below?

y=x+4

Step-by-step explanation:

First, if you want to put the equation into slope intercept form (y=mx+b) you can easily find the b value by seeing that the graph crosses the y axis at (0,4) meaning the y-intercept is 4 (the +4). Next, to find the slope, you can  take any two points on the graph (for this example I'll use (2,6) and (4,8)) and plug them into the formula to find the slope to get a slope (m value) of 1.

168

step-by-step explanation:

first off, we know that he drove 3.5 hours at a rate of 48 mph.

knowing that, we want to see how many miles he drove all-together.

in this case, we can just multiply 48 by 3.5.

48 * 3.5 = 168