Don't be lazy, use paper or pen, or type it into a calculator!
The answer is -48.89
The y-intercept is -8 because when you put it in standard form you subtract 8x from both sides which give you-3y=-8x+24. Then you divide both sides by -3 which gives you y=8/3x-8. Since the form is y=mx+b, b is the y-intercept so it would be -8.
You didn’t show the graph so i can’t tell what the numbers are so i can’t figure out the slope or y-intercept
The Guzman family=45mph
The Hashimoto family=60mph