Question 403757

given:

Using the graph, determine the value of {{{y}}} when {{{x=4}}}.

line the crosses {{{-3}}} on the {{{y-axis}}}...means you have one point at (0,-3)

 and {{{1.5}}} on {{{x}}} axis....means you have second point at (1.5, 0)

now, we can find EQUATION of straight line given {{{2}}} points


*[invoke find_equation_of_line 0, -3, 1.5, 0]


from the graph you can see, if you draw a line parallel to {{{y-axis}}} from the point {{{4}}} it will cross your line at {{{y=5}}}


that is the value of {{{y}}} when {{{x=4}}}; your third point is (4,5)



let's check if all three your points are collinear (lie on same line)


*[invoke To_determine_if_3_points_lie_in_a_line 0, -3, 1.5, 0, 4, 5]