Answer:
A. 1/4
Step-by-step explanation:
The line is upwards so slope will be positive. (either A or C will be the answer)
Now to solve for slope to find out
Two coordinate points on graph (-3,-1) ad (5,1)
Slope = (y2 - y1)/(x2 - x1)
Slope = (1 + 1)/(5 + 3) = 2/8 = 1/4
The slope of line T is -1/5, because perpendicular lines have opposite reciprocal slopes, meaning the opposite sign (positive or negative) and flipped (whole number becomes a fraction).
Formula for finding the area of a triangle = 1/2×b×h
b = 7/2
h = 5/8
1/2 × 7/2 × 5/8 = 35/32
The area = 35/32
To find the third angle;
57 + 82 = 139
The total measurement of a triangles angle is 180
180 - 139 = 41
<u>The Third angle is 41</u>