Answer:
y = -2x+4
Step-by-step explanation:
points (1,2) (4,-4)
slope = (y2-y1)/(x2-x1)
= (-4-2)/(4-1)
= -6/3
= -2
point slope form
y-y1= m(x-x1)
y-2 = -2(x-1)
to change to slope intercept form
distribute
y-2 = -2x+2
add 2 to each side
y = -2x+4
The answer would be: He spent 17 hours on the phone
Explanation: $826.20 - $725= $101.2 - $40= $61.12 / $3.60= 17hrs
Pink and yellow are perpendicular
Answer:
(3, 3 )
Step-by-step explanation:
Given the 2 equations
3x - y = 6 → (1)
6x + y = 21 → (2)
Adding the 2 equations term by term will eliminate y, that is
(6x + 3x) + (y - y) = (21 + 6), that is
9x = 27 (divide both sides by 9 )
x = 3
Substitute x = 3 into either (1) or (2) and solve for y
Using (2), then
(6 × 3) + y = 21
18 + y = 21 ( subtract 18 from both sides )
y = 3
Solution is (3, 3 )
Answer:
Yes they are proportional because he is selling cars at the same rate
Step-by-step explanation:
