Yes because the right triangle has a right angle which will equal to 90° you can place 89.99 to the nearest whole number which will give you a right angle.
Answer:
the answer is C
Step-by-step explanation:
It already is rounded to the tenths
.1 is tenth
We first need to find the gradient of the line

From the graph, we see the graph intercepts y-axis at -1
Hence, the equation of the line is