Item 1. Since the value of m and b are already given, just substitute those in the equation of a straight line: y = mx + b. Then you'll have your answer.
Item 2. The given are value of m and a pair of points (2,0) where 2 is your x and 0 is your y. First, plug in the value of m in y = mx + b. Next, plug in the values of x and y (2,0) and solve for the value of b. Substitute the values of m and b in the equation of a straight line: y = mx + b.
Answers & Comments
Step-by-step explanation:
Item 1. Since the value of m and b are already given, just substitute those in the equation of a straight line: y = mx + b. Then you'll have your answer.
Item 2. The given are value of m and a pair of points (2,0) where 2 is your x and 0 is your y. First, plug in the value of m in y = mx + b. Next, plug in the values of x and y (2,0) and solve for the value of b. Substitute the values of m and b in the equation of a straight line: y = mx + b.