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The sum of two numbers is 89. Four times the first number plus the second number gives 155. What are the two numbers?
Let the first number equal x and the second number equal y. You have: A) x + y = 89. B) 4x + y = 155. First you rearrange equation A to obtain equation C) y = 89 - x Then substitute C) into B) to obtain equation D) 4x + 89 - x = 155 Solve equation D) for x to obtain x = 22. Place the value of x in equation C) to obtain y = 67. Thus your answer is {x = 22, y = 67}.
How do you find y-intercept?
The y-intercept can be obtained from the straight line formula, y=mx+c. The y-intercept, c, is therefore given by c=-mx+y where m is the coefficient of gradient.
Can you write an equation for a non proportional linear relationship?
Yes. y = mx + c where m and c are non-zero constants.Yes. y = mx + c where m and c are non-zero constants.Yes. y = mx + c where m and c are non-zero constants.Yes. y = mx + c where m and c are non-zero constants.
Y equals mx plus c what is m and c?
well, m is the slope and c is the y-intercept
What is the equation for y varies directly as the cube of x?
y = c*x3 where c is the constant of proportionality.
