Whats the error?Jonah says a common denominator for 3/4 and 2/5 is 9.What is Jonahs error?

1 answer:

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In order to get the common denominator when adding fractions or subtracting fractions, you have to make sure that the denominator of the two items are divisible by each other. In this case, 9 is not divisible by any of the given denominators which is 4 and 5. So in this case, the common denominator will have to be 20. 5 x 4 will equal to 20 and you will also multiply 3 x 5 to get the new numerator. After that, you will multiply 2 x 4 to get the new numerator of the other fraction. The new fractions will be 15/20 and 8/20. From there, you can add or subtract

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Graph two more functions in the same family for witch the parameter being changed is the y-intercept, b

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Answer:

The equation of line having slope m and y-intercept b is

y = m x + b

The other two equations of line in the same family having intercepts p and q are,keeping the slope same i.e m , described in the question are

→ y= m x + p

→ y = m x + q

As both the equation have same slope i.e m , so lines will be parallel, but their Y - intercept are different i.e distance from the origin where it cuts the y-axis are different i.e at a distance of p and q from origin.