The point-slope form:

We have two points (-9, 7) and (9, 1). Substitute:

Answer:
Gary can go 4.9 miles in 84 minutes.
Step-by-step explanation:
First, you need to determine the amount of hours 84 minutes represent considering that 60 minutes are equal to an hour:
60 minutes → 1 hour
84 minutes → x
x=(84*1)/60=1.4 hours
Now, 1.4 hours would be the time which is x and you can replace the value on the formula to find y:
y=3.5x
y=3.5(1.4)
y=4.9
According to this, the answer is that Gary can go 4.9 miles in 84 minutes.
Y=-4x+6 x=1
y=-4(1)+6
y=-4+6
y=2
9.862 rounded the the nearest tenth in 9.9
3,1
Mark my answer a brainliest answer question