3. what is the range of the function: {(1, 3); (3, 5); (5, 7); (7, 9)}?
(points : 4)
{1, 3, 5, 7}
{1, 3, 5, 7, 9}
{1, 9}
{3, 5, 7, 9}
question 4.4. if f(x) varies directly with x and f(x) = 4 when x = 12, then what is the value of f(x) when x = 60?
(points : 4)
5
20
180
300
what is the turning point of the graph of f(x) = |4x| + 2 ?
(points : 4)
(0, 0)
(–4, 2)
–(2, 0)
(0, 2)

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3