-Hello There-
B Correct
The area of the original shape will be
multiplied by 9 to get the area of the
image under a dilation with scale
factor 3.
15 × 9 = 135 cm2
The perimeter of the original shape
will be multiplied by 3 to get the
perimeter of the image.
20 × 3 = 60 cm
Yep! 7x2=14-15= -1 // answer is a
Answer:

Step-by-step explanation:
Given:

A translation upward or downward affects the
value of a coordinate while a translation left or right affects the
value of a coordinate.
We are translating the whole triangle down three units, so we subtract all the
values by 3.
We are also translating the whole triangle to left left five units, so we will subtract all the
values by 5.

New Coordinates:

Answer = <span><span><span><span>12<span>x3</span></span>−<span>7<span>x2</span></span></span>+<span>9x</span></span>−<span>2</span></span>
<h3>5x - y = 27 and 2x + y = 8 are the system of equations with a solution of (5,-2)
</h3>
<em><u>Solution:</u></em>
Given that,
create a system of equations with a solution of (5,-2)
<em><u>The equation for a line in slope intercept form:</u></em>
y = mx + b
Where, m is the slope and b is the y intercept
For (x, y) = (5, -2)
-2 = 5m + b
<em><u>When m = 5</u></em>
-2 = 5(5) + b
-2 = 25 + b
b = -2 - 25
b = -27
<em><u>When m = -2</u></em>
-2 = 5(-2) + b
-2 = -10 + b
b = 8
<em><u>Thus equations are:</u></em>
y = 5x - 27
y = -2x + 8
<em><u>Rearranging to standard form,</u></em>
5x - y = 27 --- eqn 1
2x + y = 8 ---- eqn 2
Thus the system of equations are found
<h3><u>Verify:</u></h3>
Solve eqn 1 and eqn 2
Add both eqn 1 and eqn 2
7x = 35
<h3>x = 5</h3>
Substitute x = 5 in eqn 2
2(5) + y = 8
y = 8 - 10
<h3>y = -2</h3>
Thus solution is (5, -2) and the found system of equations are correct