30+4X=90 (right angle is 90°)
X=15
4 (15)= 60
30+60= 90 so you know it's right
Answer: 5 up 10 over
Step-by-step explanation:
I had this on my quiz
Answer: -8/4
Step-by-step explanation:
Answer: The student is <u>not</u> correct
To reflect over the y axis, you use this rule
The x coordinate swaps in sign (from positive to negative, or vice versa) while the y coordinate stays the same.
So for a point like A(1,1), it should move to A ' (-1, 1) and not (-2,1) like the diagram shows.
B(3,1) should move to B ' (-3, 1)
C(1,4) should move to C ' (-1, 4)
It appears that the student applied a reflection over the y axis, and then they shifted the triangle 1 unit to the left.