The slope-intercept form:

m - slope
b - y-intercept
The formula of a slope:

We have:
.
Substitute:

Therefore we have
.
Substitute the coordinates of the point (1, 1) to the equation:

<em>add 3 to both sides</em>

<h3>Answer: y = -3x + 4</h3>
We have:

Substitute:

Therefore we have
.
Substitute the coordinates of the point (4, 1) to the equation:

<em>subtract 3 from both sides</em>

<h3>Answer:

</h3>
Answer:
Walt has 37 quarters. Hank has 33.
Step-by-step explanation:
Solve the given equation for q:
0.25q + 0.25q - 1.00 = 17.50
Simplify this, obtaining:
0.50q = 18.50
Simplifying this by multiplying both terms of this result by 100:
50 q = 1850
Thus, q = 1850/50 = 37
Walt has 37 quarters. Hank has 33.
Note that 37 + 33 = 70, and that 70($0.25) = $17.50. So our results are correct.