Pls help (this is iready that's why it's hard)​

Negative slope means that the line will come down from the left to right. Positive slope means that the line will go up from the left to right.

As we are trying to find a line with negative slope, we can eliminate graphs 1 and 3 (they go up from left to right, so they are positive slopes).

Y-intercept is the point where the line crosses the vertical axis (the y-axis). Therefore, for the y-intercept to be positive, it has to be above the origin (where the horizontal and vertical axes meet). So we're looking for a line that meets the y-axis above the origin, which is graph 2. Graph 4 has a negative y-intercept as it meets the axis under the origin.

Therefore, graph 2 is the answer.

t= half of the arc subtended by t.

r= half of the arc subtended by r.  

t+r= half of the arc subtended by t + half of the arc subtended by r= half of 360=180

step-by-step explanation:

if you are looking for the answer it is 10

step-by-step explanation: