Choose the Correct Graph: Which Function Passes Through (6,80)?

Question

Choose the graph of the function that passes through the point (6,80) (6,80)

Video Solution

Solution Steps

00:00 Find if the point is on the line
00:03 In each point, the left number represents the X-axis and the right one Y
00:06 Let's substitute the point in the line equation and see if it's possible
00:15 Always solve parentheses first
00:19 Possible, therefore the point is on the line
00:22 And this is the solution to the question

Step-by-Step Solution

We want to find which function passes through the point (6,80) (6, 80) . This means we need the function to satisfy the equation y=80 y = 80 when x=6 x = 6 .

Let's evaluate the candidate functions one by one:

  • Function 1: y=5(x+10) y = 5(x + 10)
    Substitute x=6 x = 6 : y=5(6+10)=5×16=80 y = 5(6 + 10) = 5 \times 16 = 80 .
    This function gives the correct output, so it passes through the point (6,80) (6, 80) .

  • Function 2: y=x y = x
    Substitute x=6 x = 6 : y=6 y = 6 .
    The output 6 6 is not equal to 80 80 , so this function does not pass through (6,80) (6, 80) .

  • Function 3: y=2x+3 y = 2x + 3
    Substitute x=6 x = 6 : y=2(6)+3=12+3=15 y = 2(6) + 3 = 12 + 3 = 15 .
    The output 15 15 is not equal to 80 80 , hence this function does not pass through (6,80) (6, 80) .

  • Function 4: y=125x y = 12 - 5x
    Substitute x=6 x = 6 : y=125(6)=1230=18 y = 12 - 5(6) = 12 - 30 = -18.
    The output 18-18 is not equal to 80 80 , hence this function does not pass through (6,80) (6, 80) .

After checking all options, the function y=5(x+10) y = 5(x + 10) is the only one that satisfies the condition. Therefore, the correct answer is y=5(x+10) y = 5(x + 10) .

Answer

y=5(x+10) y=5(x+10)