Answer:
y=3x+28
Step-by-step explanation:
so a line perpendicular to one with a slope of 1/3 would have a slope of 3/1 which is just 3
so your line would be y=3x+b
to find b you just plug in the coordinates of the point that you want it to pass through into x and y. Remember that points are written as (x,y)
10=3x-6+b
10=-18+b
28= b
the equation is y=3x+28
Yes, it’s true, because it’s more than 3, but less than 4
y = x^2 + 2x...eqn 1
y = 3x + 20...eqn 2
subst for y in eqn 1...
=> x^2 +2x = 3x +20
=> x^2 - x - 20 =0
=> (x-5) (x+4) =0
=> x = 5 or -4
for x =5, y = 35 (sub for x in eqn 1 or 2)
for x = -4, y = 8 (sub for x in eqn 1 or 2)
