cho tam giác abc có góc B = 45 độ, góc C = 30 độ. Trên AC lấy điểm M sao cho góc MBC =15 độ. Chứng minh M là trung điểm AC

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

step-by-step explanation:

infinity is the answer

image for option 4

step-by-step explanation:

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