Set it up like a ratio: pipes on the top and minutes on the bottom. Therefore, your ratio would be 4/70 = 7/x. Cross-multiply to get 4x=490 and x = 122.5 minutes. Change that to hours if you'd like by dividing by 60!

7 0

3 years ago

Please solve this. I don't understand. Also, please explain. I'll give brainliest if you're right.

Elodia [21]

Answer:

y = $\frac{1}{3}$ x + 4

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 3, 3) and (x₂, y₂ ) = (0, 4)

m = $\frac{4-3}{0+3}$ = $\frac{1}{3}$

Note the line crosses the y- axis at (0, 4) ⇒ c = 4

y = $\frac{1}{3}$ x + 4 ← equation of line

7 0

3 years ago

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