What is the slope-intercept form for (1,6) and (2,5)

Sarah used her calculator to find sin 125 degrees. she wrote down sin sin125 degrees.57. how could sarah recognize that her answer is incorrect?

Simplify. 4+3/7x-2-2/7x a. 2-5/7x b. 6-1/7x c. 2+1/7x d. 6+5/7x

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9