(Problem for Questions 17 - 19). Research has shown that when children and adolescents have contact with peers of a different race or ethnicity, this decreases the likelihood of racial/ethnic discrimination (Pettigrew & Tropp, 2008). In a study my colleagues and I conducted we examined the extent to which children had friendships with peers of a different race or ethnicity and whether that increased the likelihood to intervene when a peer was being bullied because of their race or ethnicity. So in a sample of early adolescents we measured how many friendships with peers of different races or ethnicity participants had (on a scale of 1 = none to 4 = Many) and how likely they were to say something to their classmates who were bullying another classmate because of their race and ethnicity (on a scale of 1 = Really not likely to 6 = really likely). Here is data from a subsample of participants: Friendship contact Likelihood of Intervention 5 4 6 4 3 2 1 6 4 5 6 5

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.