Which is the equation for bc?

Step-by-step explanation:

A line can be expressed using a slope-intercept form:

Where:

Given a point on the line it is possible to obtain the previous equation from the following formula:

From the graph we can extract the two points necessary to find the equation. As you can see:

So, let's find the slope:

Now, we have everything we need to find the equation for BC:

Therefore, the equation for BC is:

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.  

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq